Taylor Swift, Fun. To Fight Adele At Billboard Awards

Adele will defend top-selling status two years after dropping 21 at May 19 ABC show.

While Taylor Swift, Fun. and Maroon 5 are all the top nominees at the upcoming Billboard Awards with 11 nods each, music lovers might be surprised by the staying power of Adele and her February 2011 album release 21.

Two years after dropping her unstoppable sophomore album, the singer finds herself up for a handful of awards at the May 19 broadcast, including Top Billboard 200 album. Swift's Red, Mumford & Sons' Babel and One Direction's two 2012 album releases Take Me Home and Up All Night are all vying for that prize as well.

Adele will face off against more high-rollers in the Top Pop Album category. Maroon 5's Overexposed, 1D's two albums once again and Justin Bieber's Believe are all hoping to win.

Maroon 5 are up against Swift in the Top Artist prize against the likes of 1D, Rihanna and Bieber. Among Fun.'s many nods are Top Hot 100 Song for "Some Nights," Top Duo/Group and Top Hot 100 Artist.

With Fun., Swift and Maroon 5 going into the show the night's big nominees, other big contenders include Rihanna, who notched 10 nods, Juno Awards winner Carly Rae Jepsen with 9 and 1D with 8 nominations. One Direction will try and snag the Top New Artist prize from Gotye, Jepsen, The Lumineers and Psy.

Swift and Bieber, as well as fellow nominees Bruno Mars and Miguel, will all perform at the show at the MGM Grand Garden Arena in Las Vegas. "30 Rock" star Tracy Morgan will host the ceremony, airing at 8 p.m. ET on ABC. Prince is also slated to take home the Billboard Icon Award at the Sin City festivities.

The nominees were picked based on album and digital singles sales, radio airplay, touring, streaming and social interactions on sites like Facebook, Twitter, YouTube, Vevo and Spotify.

Who are you rooting for at the Billboard Awards? Leave a comment below!